Diamond anvil cell pressing machine double-gas-film pressurization and pressure relief device

Abstract

The invention provides a diamond anvil cell pressing machine double-gas-film pressurization and pressure relief device which comprises a pressing machine sleeve, a first gas film piece and a second gas film piece are arranged at the two ends of the pressing machine sleeve respectively and pressed tightly through a top fixing thread sleeve and a bottom fixing thread sleeve respectively, and the diamond anvil cell pressing machine double-gas-film pressurization and pressure relief device further comprises a pressing piece abutting against the first gas film piece. The other end of the pressing piece abuts against the plug pressing movable machine, the first gas film piece and the second gas film piece both have an expansion state and a contraction state, when the first gas film piece and the second gas film piece are in the expansion state, the pair of diamond pressing drills move in the direction close to each other, and when the first gas film piece and the second gas film piece are in the contraction state, the pair of diamond pressing drills move in the direction away from each other. A single-gas-film pressurization and pressure relief mode is changed into a double-gas-film pressurization and pressure relief mode, so that more stable and more uniform pressure distribution can be provided, the pressure can be more uniformly transmitted to a sample, the pressure fluctuation of the jacking drill is reduced, the working stability of the jacking drill is improved, the deformation degree of the sample can be reduced, and the working efficiency of the jacking drill is improved. And the accuracy of experimental results is improved.

Description

Technical Field

[0001] This application relates to the field of in-situ measurement of physical quantities under high temperature and high pressure, and particularly relates to a double air film pressurizing and pressure-relieving device for a diamond anvil press. Background Art

[0002] The diamond anvil press (DAC) experimental technology has become an important auxiliary means for modern frontier extreme environment scientific research. The pressure generated between its opposed anvils can reach several hundred GPa, and it is currently the only scientific device that can generate static pressure of one million atmospheres. It is the most important scientific instrument in the field of high-pressure science and technology research.

[0003] However, in the actual use process of the diamond anvil press (DAC), generally, the DAC is first pre-pressed to a certain fixed pressure value and then taken to another experimental environment for optical measurement and analysis. Such an isolated experimental process will lead to discontinuity in the observation of the sample, and it is very likely to cause the loss of important data. In the current extreme environment scientific experimental environment, the loss of even a tiny bit may cause the loss of important experimental phenomena, thus affecting the overall experimental results. Moreover, the overall structure of the diamond anvil press has a great influence on the ultimate pressure generated at the anvil surface of the diamond anvil;

[0004] In the prior art, generally, a single air film is used for pressurizing and pressure-relieving. However, this pressurizing and pressure-relieving method may have a certain impact on the shape and size stability of the sample, and also has a certain impact on the deformation degree of the sample. In the case of single air film pressurizing and pressure-relieving, the shape and size of the workpiece may be easily affected by external factors such as pressure change and temperature change, thus affecting the accuracy of the experimental results. Summary of the Invention

[0005] The purpose of this application is to address the above problems and provide a double air film pressurizing and pressure-relieving device for a diamond anvil press, including: a press sleeve, the press sleeve having an accommodation space for containing a piston, and the piston including a pair of diamond anvils arranged along a first direction;

[0006] The press sleeve has a first end and a second end, and a first groove is provided at the first end, and a top fixing screw sleeve is provided in the first groove;

[0007] A first air film sheet, the first air film sheet being provided in the first groove and below the top fixing screw sleeve, and the top fixing screw sleeve being used to press the first air film sheet tightly;

[0008] A pressing member, one end of the pressing member passes through the bottom of the first groove and abuts against a mounting hole formed on the upper surface of the plug piston machine, and the end of the pressing member away from the plug piston machine abuts against one end of the first air film away from the top fixing sleeve;

[0009] A bottom fixing sleeve is provided on the second end, and a second air film is further provided between the bottom fixing sleeve and the plug piston machine. The bottom fixing sleeve is used to press the second air film against the lower surface of the plug piston machine;

[0010] Both the first air film and the second air film have an expanded state and a contracted state. When in the expanded state, the pair of diamond drills move towards each other. When in the compressed state, the pair of diamond drills move away from each other.

[0011] According to the technical solution provided by the embodiment of the present application, a first air film gasket is further provided between the first air film and the top of the pressing member.

[0012] According to the technical solution provided by the embodiment of the present application, a second air film gasket is further provided between the second air film and the lower surface of the plug piston machine.

[0013] According to the technical solution provided by the embodiment of the present application, a first pipeline extending along the first direction is further provided on the first air film. A first through hole for accommodating the first pipeline is provided on the top fixing sleeve. The first pipeline extends out of the first through hole to the outside and is connected to a high-pressure gas cylinder. The high-pressure gas cylinder is used to switch the first air film between the expanded state and the compressed state.

[0014] According to the technical solution provided by the embodiment of the present application, a second pipeline is provided on one side of the second air film close to the first air film gasket. Second through holes for accommodating the second pipeline and extending along the first direction are provided on both the second air film gasket and the plug piston machine. A third through hole extending along the second direction is further provided on the plug piston machine. The second through hole and the third through hole are communicated and present an L shape. A fourth through hole communicated with the third through hole is provided on the side wall of the press sleeve. The second pipeline sequentially passes through the second through hole, the third through hole and the fourth through hole and extends out to the outside and is connected to a high-pressure gas cylinder. The high-pressure gas cylinder is used to switch the second air film between the expanded state and the compressed state. The second direction is perpendicular to the first direction.

[0015] According to the technical solution provided by the embodiment of the present application, a receiving groove extending in the first direction is formed on the side wall of the press sleeve, the receiving groove communicates with the fourth through hole, the second pipeline passes through the fourth through hole and enters the receiving groove and extends to the outside.

[0016] According to the technical solution provided by the embodiment of the present application, the first groove is threadedly connected to the top fixing sleeve; the bottom fixing sleeve is threadedly connected to the second end.

[0017] According to the technical solution provided by the embodiment of the present application, first light through holes are respectively provided at both ends of the plug press, the first light through holes are in a conical shape, and the small-diameter ends of the two first light through holes are close to each other. Second light through holes are provided on the first air film, the first air film gasket, the second air film, and the second air film gasket, and the diameter of the second light through holes is equal to the diameter of the large-diameter end of the first light through holes.

[0018] According to the technical solution provided by the embodiment of the present application, the pressing member includes a pressing portion and a movable portion arranged along the first direction. The pressing portion is in a conical shape, and the small-diameter end of the pressing portion is connected to the movable portion. The movable portion can move along the first direction at the small-diameter end of the pressing portion. A first conical hole having the same shape as the pressing portion is provided at the bottom of the first groove, and the pressing portion can be in contact with the inner wall of the first conical hole. When the pressing portion moves toward the first conical hole, the pair of diamond drills move toward each other.

[0019] According to the technical solution provided by the embodiment of the present application, the number of the pressing members and the first conical holes is 4, and they are circumferentially arranged at equal intervals around the axis of the first groove.

[0020] Compared with the prior art, the beneficial effects of the present application are as follows: During use, the sample is clamped between a pair of diamond drills in the plug press, and then the plug press is placed in the accommodation space. The second air film is placed on the bottom fixing sleeve, and the bottom fixing sleeve is used to make the second air film contact the lower surface of the piston press. Then one end of the pressing member is extended into the mounting hole on the plug press through the bottom of the first groove and abuts against the mounting hole. The first air film is placed on the other end of the pressing member, and the top fixing sleeve is used to press the first air film. Then high-pressure gas is injected into the first air film and the second air film at the same time, so that it changes from a compressed state to an expanded state, so that a pair of diamond drills move toward each other. When pressure is released, the first air film and the second air film can be changed from an expanded state to a compressed state at the same time;

[0021] By the method described in this application, the method of pressurizing and depressurizing a single air mold is changed to pressurizing and depressurizing through a double air film. During the process of pressurizing the double air film, a more stable and uniform pressure distribution can be provided, enabling the pressure to be transmitted to the sample more evenly, reducing the pressure fluctuation on the top drill, improving the stability of the top drill operation, thereby being able to reduce the deformation degree of the sample, improve the accuracy of the experimental results, and the double air film pressurization can also better control the change of pressure and better simulate the pressure distribution in the actual working environment; during the process of depressurizing the double air film, better stability can be provided, which can reduce the occurrence of accidents such as sample rupture and shedding, thereby being able to reduce the experimental risk, improve the safety and reliability of the experiment, and when depressurizing, the release of pressure can be better controlled, and the preset depressurization target can be reached more quickly, shortening the depressurization time and improving the work efficiency. Finally, the method of double air film pressurization and depressurization can improve the safety of the top drill press. In the single air mold pressurization method, if the pressure cannot be effectively controlled, it may cause accidents such as rupture or shedding of the workpiece in the top drill press, while the method of double air film pressurization and depressurization can better monitor and adjust the pressure, thereby reducing these risks and improving the safety of the top drill press. Brief Description of the Drawings

[0022] Figure 1 It is a cross-sectional view of the double air film pressurization and depressurization device of the diamond anvil press provided by the embodiment of this application;

[0023] Figure 2 It is an internal view without the press sleeve provided by the embodiment of this application;

[0024] Figure 3 It is a schematic diagram of the first conical hole and the auxiliary installation hole on the press sleeve provided by the embodiment of this application;

[0025] Figure 4 It is an exploded view without the press sleeve provided by the embodiment of this application;

[0026] Figure 5 It is a schematic diagram of the structure of the pressing member provided by the embodiment of this application;

[0027] Figure 6 It is a schematic diagram of the structure of the receiving groove on the press sleeve provided by the embodiment of this application;

[0028] Figure 7 It is a schematic diagram of the plug press provided by the embodiment of this application.

[0029] The text markings shown in the figure are as follows: 1. Press sleeve; 2. Plunger piston; 3. First groove; 4. Top fixing nut; 5. First air film; 6. Compression member; 7. Mounting hole; 8. Bottom fixing nut; 9. Second air film; 10. First air film gasket; 11. Second air film gasket; 12. First pipeline; 13. First through hole; 14. Second pipeline; 15. Second through hole; 16. Third through hole; 17. Receiving groove; 18. First light through hole; 19. Second light through hole; 20. Compression part; 21. Movable part; 22. First conical hole; 23. Auxiliary mounting hole. Detailed implementation mode

[0030] To enable those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present application.

[0031] The double air film pressurizing and pressure relieving device for a diamond anvil press provided by the present application includes a press sleeve 1, and the press sleeve 1 has a receiving space for accommodating a plunger piston 2. The plunger piston 2 includes a pair of diamond anvils arranged along a first direction;

[0032] The press sleeve 1 has a first end and a second end. A first groove 3 is provided on the first end, and a top fixing nut 4 is provided in the first groove 3;

[0033] A first air film 5 is provided in the first groove 3 and is located below the top fixing nut 4. The top fixing nut 4 is used to press the first air film 5;

[0034] A compression member 6, one end of the compression member 6 passes through the bottom of the first groove 3 and abuts against a mounting hole 7 provided on the upper surface of the plunger piston 2. The end of the compression member 6 away from the plunger piston 2 abuts against the end of the first air film 5 away from the top fixing nut 4;

[0035] A bottom fixing nut 8 is provided on the second end. A second air film 9 is further provided between the bottom fixing nut 8 and the plunger piston 2. The bottom fixing nut 8 is used to press the second air film 9 against the lower surface of the plunger piston 2;

[0036] Both the first air film 5 and the second air film 9 have an expanded state and a contracted state. When in the expanded state, the pair of diamond anvils move towards each other. When in the compressed state, the pair of diamond anvils move away from each other.

[0037] Specifically, in this embodiment, as Figure 1 、 Figure 2As shown in Figure 3 the diamond anvil press double air film pressurization and pressure relief device provided by the present application includes a press sleeve 1, the press sleeve 1 is cylindrical, and there is an accommodation space inside the press sleeve 1 for accommodating a plug press 2. The plug press 2 includes a pair of diamond presses arranged in the first direction. The press sleeve 1 has a first end and a second end. A first groove 3 is provided at the first end. The first groove 3 is circular. A top fixing nut 4 is provided inside the first groove 3. A first air film 5 is also provided in the first groove 3. The first air film 5 is arranged below the top fixing nut 4. The top fixing nut 4 is used to press the first air film 5 tightly inside the first groove 3. It further includes a pressing member 6. A plurality of mounting holes 7 are circumferentially provided around the axis on the upper surface of the plug press 2. One end of the pressing member 6 passes through the bottom of the first groove 3 and extends into the mounting hole 7 and abuts against the bottom of the mounting hole 7. The end of the pressing member 6 far from the plug press 2 abuts against the end of the first air film 5 far from the top fixing nut 4. A bottom fixing nut 8 is provided at the second end. A second air film 9 is further provided between the bottom fixing nut 8 and the plug press 2. The bottom fixing nut 8 is used to press the second air film 9 tightly on the lower surface of the plug press 2. Both the first air film 5 and the second air film 9 have an expanded state and a contracted state. Since the pressing member 6 can only move in the first direction within a preset range, when the first air film 5 is in the expanded state, the first air film 5 will gradually push the pressing member 6 towards the direction close to the second air film 9. Since one end of the pressing member 6 always abuts against the bottom of the mounting hole 7, the pressing member 6 will push the mounting hole 7 towards the direction close to the second air film 9. During the process of the second air film 9 changing from the telescopic state to the expanded state, it will push the plug press 2 towards the direction close to the first air film 5, so that the pair of diamond presses will gradually move towards each other to apply pressure to the sample in the middle. When in the contracted state, the pair of diamond presses will move away from each other to realize pressure relief;

[0038] During use, the sample is clamped between a pair of diamond anvils in the piston press, and then the piston press is placed in the accommodation space. The second air diaphragm is placed on the bottom fixing sleeve, and the bottom fixing sleeve is used to make the second air diaphragm abut against the lower surface of the piston press. Then, one end of the pressing member extends into the mounting hole on the piston press through the bottom of the first groove and abuts against the mounting hole. The first air diaphragm is placed on the other end of the pressing member, and the first air diaphragm is pressed tightly using the top fixing sleeve. Then, high-pressure gas is injected into the first air diaphragm and the second air diaphragm simultaneously, causing them to change from a compressed state to an expanded state, so that the pair of diamond anvils move towards each other. When pressure is released, the first air diaphragm and the second air diaphragm can be changed from an expanded state to a compressed state simultaneously;

[0039] By the method described in this application, the method of single air mold pressurization and pressure relief is changed to pressurization and pressure relief through a double air diaphragm. During the pressurization process of the double air diaphragm, a more stable and uniform pressure distribution can be provided, enabling the pressure to be transmitted to the sample more evenly, reducing the pressure fluctuation on the top drill, improving the stability of the top drill operation, thereby reducing the deformation degree of the sample and improving the accuracy of the experimental results. Moreover, the double air diaphragm pressurization can better control the pressure change and better simulate the pressure distribution in the actual working environment; during the pressure relief process of the double air diaphragm, better stability can be provided, reducing the occurrence of accidents such as sample rupture and detachment, thereby reducing the experimental risk, improving the safety and reliability of the experiment. And when pressure is released, the pressure release can be better controlled, reaching the preset pressure relief target more quickly, shortening the pressure relief time, and improving the work efficiency. Finally, the method of double air diaphragm pressurization and pressure relief can improve the safety of the top drill press. In the single air mold pressurization method, if the pressure cannot be effectively controlled, accidents such as workpiece rupture or detachment in the top drill press may occur, while the double air diaphragm pressurization and pressure relief method can better monitor and adjust the pressure, thereby reducing these risks and improving the safety of the top drill press.

[0040] Further, a first air diaphragm gasket 10 is further provided between the first air diaphragm 5 and the top of the pressing member 6.

[0041] Specifically, in this embodiment, as Figure 4 shown, a first air diaphragm gasket 10 is further provided between the first air diaphragm 5 and the pressing member 6, which can play a role in sealing and buffering under high pressure. Since the sealing performance and buffering effect of the first air diaphragm gasket 10 directly affect the accuracy and reliability of the experimental results, it can also protect the diamond anvil from damage.

[0042] Further, a second air diaphragm gasket 11 is further provided between the second air diaphragm 9 and the lower surface of the piston press 2.

[0043] Specifically, in this embodiment, as Figure 4 shown, a second air film gasket 11 is further provided between the second air film sheet 9 and the lower surface of the plug piston 2, which can play a role in sealing and buffering under high pressure. Since the sealing performance and buffering effect of the second air film gasket 11 directly affect the accuracy and reliability of the experimental results, it can also protect the diamond anvil cell from damage.

[0044] Furthermore, a first pipeline 12 extending along the first direction is provided on the first air film sheet 10. A first through hole 13 for accommodating the first pipeline 12 is provided on the top fixing sleeve 4. The first pipeline 12 extends out of the first through hole 13 to the outside and is connected to a high-pressure gas cylinder, and the high-pressure gas cylinder is used to switch the first air film sheet 10 between the expanded state and the compressed state.

[0045] Specifically, in this embodiment, as Figure 2 shown, a first pipeline 12 extending along the first direction is provided on the first air film sheet 10. A first through hole 13 for accommodating the first pipeline 12 is provided on the top fixing sleeve 4. The first pipeline 12 extends out of the first through hole 13 to the outside and is connected to an external high-pressure gas cylinder. The high-pressure gas cylinder is used to transport high-pressure gas into or release high-pressure gas from the first air film sheet 10 through the first pipeline 12, so as to switch the first air film sheet 10 between the expanded state and the compressed state.

[0046] Furthermore, a second pipeline 14 is provided on the second air film sheet 9 on the side close to the first air film gasket 10. Second through holes 15 for accommodating the second pipeline 14 and extending along the first direction are provided on both the second air film gasket 11 and the plug piston 2. A third through hole 16 extending along the second direction is further provided on the plug piston 2. The second through hole 15 and the third through hole 16 are communicated and present an L shape. A fourth through hole communicated with the third through hole 16 is provided on the side wall of the press sleeve 1. The second pipeline 14 sequentially passes through the second through hole 15, the third through hole 16 and the fourth through hole and extends out to the outside and is connected to a high-pressure gas cylinder. The high-pressure gas cylinder is used to switch the second air film sheet 9 between the expanded state and the compressed state, and the second direction is perpendicular to the first direction.

[0047] Specifically, in this embodiment, as Figure 2 , Figure 4As shown, on the side of the second air film sheet 9 relatively close to the first air film gasket 10, a second pipeline 14 is provided. Second through holes 15 are formed in both the second air mold gasket 11 and the plug piston 2. The second through holes 15 extend along the first direction. On the plug piston 2, a third through hole 16 extending along the second direction is further provided. The second through hole 15 communicates with the third through hole 16 and presents an L shape. On the side wall of the press sleeve 1, a fourth through hole communicating with the third through hole 16 is provided. One end of the second pipeline 14 far from the second air film sheet 9 sequentially passes through the second through hole 15 and the third through hole 16, and extends to the outside through the fourth through hole and is connected to an external high-pressure gas cylinder. High-pressure gas is stored in the high-pressure gas cylinder, and the high-pressure gas cylinder is used to switch the second air film sheet 9 between the expanded state and the compressed state, wherein the second direction is perpendicular to the first direction.

[0048] Further, on the side wall of the press sleeve 1, a receiving groove 17 extending along the first direction is formed. The receiving groove 17 communicates with the fourth through hole. The second pipeline 14 passes through the fourth through hole and enters the receiving groove 17 and extends to the outside.

[0049] Specifically, in this embodiment, as Figure 6 shown, on the side wall of the press sleeve 1, at a position opposite to the fourth through hole, a receiving groove 17 extending along the first direction is formed. The receiving groove 17 communicates with the fourth through hole. One end of the second pipeline 14 far from the second air film sheet 9 passes through the fourth through hole, enters the receiving groove 17, and is clamped with the receiving groove 17. The second pipeline 14 extends out of the receiving groove 17 and is connected to an external high-pressure gas cylinder.

[0050] Further, the first groove 3 is threadedly connected to the top fixing nut 4; the bottom fixing nut 8 is threadedly connected to the second end.

[0051] Specifically, in this embodiment, as Figure 3As shown, threads are provided on the inner wall of the first groove 3, and a second thread is provided outside the top fixed screw sleeve 4. The two are threadedly connected. A plurality of auxiliary mounting holes 23 are circumferentially provided on the top fixed screw sleeve 5. The plurality of auxiliary mounting holes 23 are equally spaced. A first conical hole 22 is provided between every two adjacent auxiliary mounting holes 23. The number of the auxiliary mounting holes 23 is 4. During installation, an auxiliary tool is inserted into the auxiliary mounting hole 23 to install the top fixed screw sleeve 4 on the first groove 3 and press the first air film sheet 5 tightly to prevent the first air film sheet 5 from pushing the top fixed screw sleeve 4 open when it becomes in an expanded state; the bottom fixed screw sleeve 8 and the second end are also connected by a threaded connection method.

[0052] Further, first light passing holes 18 are respectively provided at both ends of the plugging machine 2. The first light passing holes 18 are conical in shape, and the small-diameter ends of the two first light passing holes 18 are close to each other. Second light passing holes 19 are provided on the first air film sheet 5, the first air film gasket 10, the second air film sheet 9, and the second air film gasket 11. The diameter of the second light passing holes 19 is equal to the diameter of the large-diameter end of the first light passing holes 18.

[0053] Specifically, in this embodiment, as Figure 7 shown, first light passing holes 18 are respectively provided at both ends of the plugging machine 2. The first light passing holes 18 are conical in shape, and the small-diameter ends of the first light passing holes 18 are close to each other. As Figure 4 shown, second light passing holes 19 are provided on the first air film sheet 5, the first air film gasket 10, the second air film sheet 9, and the second air film gasket 11. The diameter of the second light passing holes 19 is equal to the diameter of the large-diameter end of the first light passing holes 18, which can ensure that all the entering light can enter the plugging machine 2, facilitating the use of an optical instrument to observe the sample. One side of the first light passing hole 18 is for incoming light, and the other side of the first light passing hole 18 is for using an optical instrument to observe changes in the form of the sample.

[0054] Further, the pressing member 6 includes a pressing portion 20 and a movable portion 21 arranged along the first direction. The pressing portion 20 is conical in shape, and the small-diameter end of the pressing portion 20 is connected to the movable portion 21. The movable portion 21 can move along the first direction at the small-diameter end of the pressing portion 20. A first conical hole 22 having the same shape as the pressing portion 20 is provided at the bottom of the first groove 3. The pressing portion 20 can be in contact with the inner wall of the first conical hole 22. When the pressing portion 20 moves towards the direction close to the first conical hole 22, the pair of diamond drills move towards each other.

[0055] Specifically, in this embodiment, the shape of the pressing member 6 is as follows Figure 5 shown. The pressing member 6 includes a pressing portion 20 and a movable portion 21 arranged along the first direction. The pressing portion 20 is conical in shape, and the movable portion 21 is cylindrical in shape. The small-diameter end of the pressing portion 20 is connected to the movable portion 21. A first conical hole 22 having the same shape as the pressing portion 20 is provided at the bottom of the first groove 3, as Figure 3 shown. The pressing portion 20 can abut against the inner wall of the first conical hole 22 and will not pass through the small-diameter end of the first conical hole 22. When both the first air film 5 and the second air film 9 are in a contracted state, the distance between the pressing portion 20 and the first conical hole 22 is a preset distance. The pressing member 6 is a component used to control the pressure and drilling pressure of the anvil press. The preset distance of the movement of the pressing member 6 is fixed and can be adjusted as needed. The size of the preset distance of the movement of the pressing member 6 is a prior art and is usually determined according to the design requirements and experimental requirements of the opposed anvil press. The movement distance of the pressing member 6 can effectively release the pressure in the anvil press and at the same time can avoid excessive deformation or rupture of the sample. By controlling the movement distance of the pressing member 6, the size and distribution of the drilling pressure can be adjusted, thereby realizing the process of precise control and stable drilling pressure. When the first air film 5 and the second air film 9 gradually transition from a compressed state to an expanded state, the pressing portion 20 gradually moves in a direction closer to the first conical hole 22 until the pressing portion 20 abuts against the inner wall of the first conical hole 22, which can indicate that the current state meets the environmental requirements of the experiment, etc. The morphological changes of the sample can be observed through an optical instrument.

[0056] Further, the number of the pressing members 6 and the first conical holes 22 is 4 each, and they are arranged circumferentially at equal intervals around the axis of the first groove 3

[0057] Specifically, in this embodiment, the number of the pressing members 6 and the first conical holes 22 is 4 each. The four pressing members 6 and the first conical holes 22 are arranged at equal intervals, which can ensure that the pressure received by the plug press 2 is uniform.

[0058] In this article, specific examples are used to illustrate the principles and implementation modes of this application. The descriptions of the above embodiments are only for helping to understand the method and its core idea of this application. The above is only the preferred implementation mode of this application. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of this application.

Claims

1. A double gas film pressurization and pressure relief device for a diamond anvil press, characterized in that, Comprising: A press sleeve (1), the press sleeve (1) having a receiving space for receiving a plug press (2), the plug press (2) including a pair of diamond drills arranged in a first direction; The press sleeve (1) has a first end and a second end, a first groove (3) is provided on the first end, and a top fixing sleeve (4) is provided in the first groove (3); A first air film (5), the first air film (5) is provided in the first groove (3) and is below the top fixing sleeve (4), and the top fixing sleeve (4) is used to press the first air film (5) tightly; A pressing member (6), one end of the pressing member (6) passes through the bottom of the first groove (3) and abuts against a mounting hole (7) provided on the upper surface of the plug press (2), and the end of the pressing member (6) away from the plug press (2) abuts against the end of the first air film (5) away from the top fixing sleeve (4); A bottom fixing sleeve (8) is provided on the second end, and a second air film (9) is further provided between the bottom fixing sleeve (8) and the plug press (2), and the bottom fixing sleeve (8) is used to press the second air film (9) tightly against the lower surface of the plug press (2); Both the first air film (5) and the second air film (9) have an expanded state and a contracted state. When in the expanded state, the pair of diamond drills move towards each other, and when in the compressed state, the pair of diamond drills move away from each other.

2. The double gas film pressurization and pressure relief device for a diamond anvil press according to claim 1, wherein, A first air film gasket (10) is further provided between the first air film (5) and the top of the pressing member (6).

3. The double gas film pressurizing and pressure-relieving device for a diamond anvil press according to claim 2, characterized in that, A second air film gasket (11) is further provided between the second air film (9) and the lower surface of the plug press (2).

4. The double gas film pressurizing and pressure-relieving device for a diamond anvil press according to claim 2, wherein, A first pipeline (12) extending in the first direction is further provided on the first air film (10), a first through hole (13) for accommodating the first pipeline (12) is provided on the top fixing sleeve (4), and the first pipeline (12) extends out from the first through hole (13) to the outside and is connected to a high-pressure gas cylinder, and the high-pressure gas cylinder is used to switch the first air film (10) between the expanded state and the compressed state.

5. The double gas film pressurization and pressure relief device for a diamond anvil press according to claim 3, characterized in that, On one side of the second air film sheet (9) close to the first air film gasket (10), a second pipeline (14) is provided. Second through holes (15) for accommodating the second pipeline (14) and extending along the first direction are formed in both the second air film gasket (11) and the plug piston machine (2). A third through hole (16) extending along the second direction is further provided on the plug piston machine (2). The second through hole (15) and the third through hole (16) are communicated and present an L shape. A fourth through hole communicated with the third through hole (16) is provided on the side wall of the press sleeve (1). The second pipeline (14) sequentially passes through the second through hole (15), the third through hole (16) and the fourth through hole and extends to the outside to be connected with a high-pressure gas cylinder, and the high-pressure gas cylinder is used to switch the second air film sheet (9) between the expanded state and the compressed state. The second direction is perpendicular to the first direction.

6. The double gas film pressurization and pressure relief device for a diamond anvil press according to claim 5, wherein, A receiving groove (17) extending along the first direction is formed in the side wall of the press sleeve (1). The receiving groove (17) is communicated with the fourth through hole. The second pipeline (14) passes through the fourth through hole and extends into the receiving groove (17) and then extends to the outside.

7. The double gas film pressurizing and pressure-relieving device for a diamond anvil press according to claim 1, wherein The first groove (3) is threadedly connected with the top fixing screw sleeve (4); the bottom fixing screw sleeve (8) is threadedly connected with the second end.

8. The double gas film pressurization and pressure relief device for a diamond anvil press according to claim 3, characterized in that, First through holes (18) are respectively provided at both ends of the plug piston machine (2). The first through holes (18) are conical in shape, and the small-diameter ends of the two first through holes (18) are close to each other. Second through holes (19) are provided on the first air film sheet (5), the first air film gasket (10), the second air film sheet (9) and the second air film gasket (11). The diameter of the second through hole (19) is equal to the diameter of the large-diameter end of the first through hole (18).

9. The double gas film pressurization and pressure relief device for a diamond anvil press according to claim 1, characterized in that, The pressing member (6) includes a pressing part (20) and a movable part (21) arranged along the first direction. The pressing part (20) is conical in shape, and the small-diameter end of the pressing part (20) is connected to the movable part (21). The movable part (21) can move along the first direction at the small-diameter end of the pressing part (20). A first conical hole (22) having the same shape as the pressing part (20) is provided at the bottom of the first groove (3). The pressing part (20) can be in contact with the inner wall of the first conical hole (22). When the pressing part (20) moves towards the first conical hole (22), the pair of diamond drills move towards each other.

10. The double gas film pressurization and pressure relief device for a diamond anvil press according to claim 9, characterized in that, The number of the pressing members (6) and the first conical holes (22) is 4, and they are all arranged circumferentially at equal intervals around the axis of the first groove (3).

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